2957992

Information

• Patent Grant
• 2957992

• References
• Source

• Patent Number

  2,957,992

• Date Filed

  Not available

• Date Issued

  Tuesday, October 25, 1960
  65 years ago

• CPC

  • H01H51/082 - using rotating ratchet mechanism
  • B60Q5/00 - Arrangements or adaptations of acoustic signal devices

• US Classifications

  • 307 - Electrical transmission or interconnection systems